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首页> 美国卫生研究院文献>BioMed Research International >Removal of Cu, Zn, Pb, and Cr from Yangtze Estuary Using the Phragmites australis Artificial Floating Wetlands
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Removal of Cu, Zn, Pb, and Cr from Yangtze Estuary Using the Phragmites australis Artificial Floating Wetlands

机译：用芦苇人工漂浮湿地去除长江口中的铜，锌，铅和铬

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Contamination of heavy metals would threaten the water and soil resources; phytoremediation can be potentially used to remediate metal contaminated sites. We constructed the Phragmites australis artificial floating wetlands outside the Qingcaosha Reservoir in the Yangtze Estuary. Water characteristic variables were measured in situ by using YSI Professional Pro Meter. Four heavy metals (copper, zinc, lead, and chromium) in both water and plant tissues were determined. Four heavy metals in estuary water were as follows: 0.03 mg/Kg, 0.016 mg/Kg, 0.0015 mg/Kg, and 0.004 mg/Kg. These heavy metals were largely retained in the belowground tissues of P. australis. The bioaccumulation (BAF) and translation factor (TF) value of four heavy metals were affected by the salinity, temperature, and dissolved oxygen. The highest BAF of each metal calculated was as follows: Cr (0.091 in winter) > Cu (0.054 in autumn) > Pb (0.016 in summer) > Zn (0.011 in summer). Highest root-rhizome TF values were recorded for four metals: 6.450 for Cu in autumn, 2.895 for Zn in summer, 7.031 for Pb in autumn, and 2.012 for Cr in autumn. This indicates that the P. australis AFW has potential to be used to protect the water of Qingcaosha Reservoir from heavy metal contamination.
机译：重金属的污染将威胁水和土壤资源；植物修复可潜在地用于修复金属污染部位。我们在长江口青草沙水库外修建了芦苇人工漂浮湿地。通过使用YSI Professional Pro Meter现场测量水特征变量。测定了水和植物组织中的四种重金属（铜，锌，铅和铬）。河口水中的四种重金属分别为：0.03 mg / Kg，0.016 mg / Kg，0.0015 mg / Kg和0.004 mg / Kg。这些重金属主要保留在澳大利亚假单胞菌的地下组织中。四种重金属的生物累积（BAF）和转化因子（TF）值受盐度，温度和溶解氧的影响。计算出的每种金属的最高BAF如下：Cr（冬季为0.091）> Cu（秋季为0.054）> Pb（夏季为0.016）> Zn（夏季为0.011）。记录了四种金属的最高根茎TF值：秋季为Cu的6.450，夏季为Zn的2.895，秋季为Pb的7.031，秋季为Cr的2.012。这表明对虾青枯菌有潜力用于保护青草沙水库水免受重金属污染。

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